Hypoxylon madangense Van der Gucht, Y.-M. Ju, & J. D. Rogers
TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES
Hypoxylon madangense Van der Gucht, Y.-M. Ju, & J. D. Rogers, Mycologia 89: 504. 1997.
Stromata effused-pulvinate, with inconspicuous perithecial mounds, 1.5-4 cm long x 1-1.5 cm broad x 1.3-3 mm thick; surface dull cinnamon (62) to dull isabelline (65); blackish granules immediately beneath surface and between perithecia, with KOH-extractable pigments isabelline (65); tissue below the perithecial layer black, 0.4-0.5 mm thick.
Perithecia tubular, 0.25-0.4 mm diam x 0.8-1.3 mm high.
Ostioles lower than the stromatal surface.
Asci 140-185 mm total length x 8-9 mm broad, the spore-bearing parts 95-112 mm long, with stipes 40-80 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 1-2 mm high x 3-3.5 mm broad.
Ascospores light brown to brown, unicellular, ellipsoid, nearly equilateral, with broadly to narrowly rounded ends, (12-)13-18 x 6-7.5 mm, with straight germ slit less than spore-length, at the center of a paler band; perispore indehiscent in 10% KOH; epispore smooth.